EP1979208A1 - Système et procédé pour l'avertissement d'une sortie de voie de circulation - Google Patents

Système et procédé pour l'avertissement d'une sortie de voie de circulation

Info

Publication number
EP1979208A1
EP1979208A1 EP06847756A EP06847756A EP1979208A1 EP 1979208 A1 EP1979208 A1 EP 1979208A1 EP 06847756 A EP06847756 A EP 06847756A EP 06847756 A EP06847756 A EP 06847756A EP 1979208 A1 EP1979208 A1 EP 1979208A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
lane departure
steerable road
braking force
set forth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06847756A
Other languages
German (de)
English (en)
Inventor
Gusztav Holler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bendix Commercial Vehicle Systems LLC
Original Assignee
Bendix Commercial Vehicle Systems LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bendix Commercial Vehicle Systems LLC filed Critical Bendix Commercial Vehicle Systems LLC
Publication of EP1979208A1 publication Critical patent/EP1979208A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
    • B60T8/17557—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve specially adapted for lane departure prevention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/22—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle, or by means of contactless obstacle detectors mounted on the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/027—Parking aids, e.g. instruction means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D9/00—Steering deflectable wheels not otherwise provided for
    • B62D9/005—Emergency systems using brakes for steering
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/167—Driving aids for lane monitoring, lane changing, e.g. blind spot detection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/08—Lane monitoring; Lane Keeping Systems
    • B60T2201/082—Lane monitoring; Lane Keeping Systems using alarm actuation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/08—Lane monitoring; Lane Keeping Systems
    • B60T2201/083—Lane monitoring; Lane Keeping Systems using active brake actuation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/10—Path keeping
    • B60W30/12—Lane keeping

Definitions

  • the present invention relates generally to a lane departure warning system and method.
  • the present invention relates to a vehicle lane departure warning system and method that uses the vehicle braking system to provide tactile feedback to the driver.
  • Various lane departure warning systems have been developed. Such systems typically incorporate a lane departure sensor that provides an electrical signal in the event that the vehicle unintentionally departs from the intended path or track of travel, as measured or indicated by the lane markers on the roadway, for example.
  • a lane departure sensor that provides an electrical signal in the event that the vehicle unintentionally departs from the intended path or track of travel, as measured or indicated by the lane markers on the roadway, for example.
  • One known system responds to such a signal by pulsing the steering system to provide tactile feedback to the driver through the steering wheel.
  • the invention relates to a method of providing a lane departure warning to a vehicle driver by tactile feedback through the vehicle steering wheel.
  • the method includes the steps of sensing a lane departure of the vehicle; in response to the sensing step, applying braking force to a steerable road wheel of the vehicle; and transmitting force from the steerable road wheel to the vehicle steering wheel, thereby to provide tactile feedback through the steering wheel.
  • the invention in another aspect relates to apparatus for providing tactile feedback to a driver of a vehicle having left and right steerable road wheels and a steering wheel for controlling the steerable road wheels.
  • the braking system includes a left brake associated with the left steerable road wheel, a right brake associated with the right steerable road wheel, and a brake pedal operable by a driver of the vehicle for applying the left and right brakes.
  • the apparatus also includes a lane departure sensor, and an electronic control unit operatively connected with the lane departure sensor, the electronic control unit being operable to apply one of the left and right brakes in response to sensing an unintended lane departure of the vehicle without driver input through the brake pedal.
  • the invention in another aspect relates to apparatus usable in a vehicle braking system for providing tactile feedback to a driver of a vehicle having a steering wheel and left and right steerable road wheels.
  • the apparatus includes a lane departure sensor, and an electronic control unit operatively connected with the lane departure sensor, the electronic control unit providing a control signal for controlling the vehicle brakes in response to sensing an unintended lane departure of the vehicle without driver input through the brake pedal.
  • the invention in another aspect relates to apparatus for providing a lane departure warning to a vehicle driver through tactile feedback in the vehicle steering wheel.
  • the apparatus includes means for sensing an unintended lane departure of the vehicle, and means responsive to the means for sensing for applying braking force to a steerable road wheel of the vehicle, thereby to provide tactile feedback through the steering wheel.
  • FIG. 1 is a schematic illustration of an embodiment of the invention, in block diagram form
  • FIG. 1 is a schematic illustration showing a vehicle traveling on a roadway with lane departure indications.
  • FIG. 3 is a flow chart illustrating a method that is an embodiment of the invention. Detailed Description
  • the present invention relates generally to a lane departure warning system and method.
  • the present invention relates to a vehicle lane departure warning system and method that uses the vehicle braking system to provide tactile feedback to the driver.
  • the present invention is applicable to systems of varying constructions.
  • Fig. 1 illustrates schematically a vehicle braking system 10 that is a first embodiment of the invention.
  • the system 10 is located on a vehicle 12 (Figs. 1 and 2).
  • vehicle 12 is illustrated as having front wheels 14 and 16, and rear wheels 18 and 20.
  • the invention is applicable to vehicles having different and varying types of wheel configurations, for example, a commercial vehicle such as a tractor, or a tractor-trailer combination, or a straight truck, or a bus.
  • a commercial vehicle such as a tractor, or a tractor-trailer combination, or a straight truck, or a bus.
  • Each one of these types of vehicles has steerable road wheels, typically the front wheels of the vehicle.
  • the front wheels 14 and 16 are the left and right steerable road wheels of the vehicle.
  • the vehicle 12 has a steering wheel 22.
  • the steering wheel 22 is rotatable by the vehicle driver to control the steering angle of the front wheels 14 and 16.
  • a linkage of some type, indicated schematically at 24, connects the steering wheel 22 with the front wheels 14 and 16.
  • the linkage 24 provides control force from the steering wheel 22 to the front wheels 14 and 16 and may include a power assist mechanism, for example.
  • the linkage 24 also provides feedback from the front wheels 14 and 16 to the steering wheel 22.
  • the front wheels 14 and 16 hits a bump or a curb or starts to turn, that is sensed in the steering wheel 22 as a rotational force on the steering wheel not provided by the driver.
  • tactile feedback is provided to the driver.
  • the braking system 10 may be a pneumatic braking system or a hydraulic braking system. In an embodiment for a large commercial vehicle, the braking system is typically a pneumatic braking system.
  • the braking system 10 includes a left front brake, shown schematically at 30, that is associated with the left front wheel
  • the braking system 10 also includes a right front brake, shown schematically at 32, that is associated with the right front wheel 16.
  • the braking system 10 also includes a brake pedal 34 by which the driver can cause braking force to be applied at the left front wheel 14 and the right front wheel of the vehicle 16.
  • the braking system 10 also includes an electronic control unit, or ECU, shown schematically at 40.
  • the ECU 40 is capable of performing various functions in the braking system 10.
  • the ECU 40 is capable of causing the braking system to provide braking force to one or more of the wheels of the vehicle 12, without driver intervention via the brake pedal 34.
  • the ECU 40 is capable of providing braking force to either one 14 or 16 of the front wheels of the vehicle 12, without providing braking force to the other one of the front wheels.
  • Braking systems and ECUs of this type are found in different types of vehicle, for example in vehicles having electronic stability control.
  • the braking system 10 also includes a lane departure sensor, indicated schematically at 50, which is operatively connected to the ECU 40.
  • the sensor that is shown at 50 may actually be one or more individual sensor units, and may be of any suitable type.
  • the sensor 50 is operative to sense a lane departure. Specifically, the sensor 50 is operative to sense a departure from the intended lane of travel of the vehicle 12, either to the left or to the right.
  • the sensor 50 in such a case outputs an appropriate signal to the ECU 40.
  • the ECU 40 is provided with information indicating either a directionally left lane departure, or a directionally right lane departure.
  • Fig. 2 illustrates schematically a path of travel of the vehicle 12.
  • the vehicle 12 is on a roadway 60 having three lanes, including a center lane 62, a left lane 64, and a right lane 66.
  • the vehicle 12 is in the center lane 62 and is intended to be traveling along the center lane.
  • the vehicle 12 might unintentionally move out of its intended path, or track, or lane, of travel, by departing from the center lane 62.
  • the vehicle 12 might experience a directionally left lane departure, as indicated by the arrow 68.
  • the vehicle 12 might experience a directionally right lane departure, as indicated by the arrow 70.
  • the lane departure sensor 50 If a lane departure should occur, the lane departure sensor 50 outputs an appropriate signal to the ECU 40.
  • the ECU 40 is thus informed of the fact of the lane departure.
  • the ECU 40 is also informed of the direction of the lane departure, that is, a directionally left lane departure or a directionally right lane departure.
  • the ECU 40 is programmed to respond to the signal from the lane departure sensor 50. Specifically, the ECU 40 is programmed to provide a control signal so as to cause braking force to be applied to one of the front wheels 14 and 16, in response to the sensing of a lane departure.
  • the ECU 40 can cause braking force to be applied to the right front wheel 16 or to the left front wheel 14. For reasons described below, it may be desirable to cause braking force to be applied to the front wheel 14 and 16 that is on the side of the vehicle 12 opposite to the direction of lane departure.
  • Braking force is preferably applied to only one of the front wheels 14 and 16, not to both front wheels simultaneously. When this occurs, the front wheel that is braked slows down compared to the non-braked front wheel. In addition, the steerable wheels 14 and 16 turn relative to the longitudinal central axis of the vehicle 12. For example, if the right front wheel 16 is braked, the front wheels 14 and 16 turn to the right by at least a small amount.
  • An added effect of the wheel braking is that the vehicle 12 might tend to turn back toward its intended path. For example, if a directionally left lane departure is sensed, the right front wheel 16 can be braked, causing the vehicle 12 to tend to turn toward the right, thus countering the lane departure. Alternatively, if a directionally right lane departure is sensed, the left front wheel 14 can be braked, causing the vehicle 12 to tend to turn toward the left, thus countering the lane departure.
  • the ECU 40 can optionally be programmed to operate in this manner.
  • the amount of braking force that is applied is, by design, either (a) sufficient to cause a significant departure from the path or track of the vehicle 12, or (b) not sufficient to cause a significant departure from the path or track of the vehicle.
  • the ECU 40 can cause braking force to be applied in an alternating manner, first to one and then to the other of two steerable road wheels 14 and 16 of the vehicle 12. This type of application of braking force can cause the vehicle steering wheel 22 to oscillate in the driver's hands, as another form of tactile feedback to the driver in the event of an unintended lane departure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Regulating Braking Force (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

Selon l'invention, un système et un procédé servant à avertir un conducteur qu'il sort d'une voie de circulation utilisent le système de freinage du véhicule pour fournir une rétroaction tactile au conducteur. Dans un mode de réalisation, une des roues directrices du véhicule est freinée pour provoquer en retour la transmission d'une force au volant du véhicule. Par conséquent, le conducteur reçoit une rétroaction tactile par le biais du volant
EP06847756A 2006-01-31 2006-12-18 Système et procédé pour l'avertissement d'une sortie de voie de circulation Withdrawn EP1979208A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/343,740 US20070179697A1 (en) 2006-01-31 2006-01-31 Lane departure warning system and method
PCT/US2006/048270 WO2007089342A1 (fr) 2006-01-31 2006-12-18 Système et procédé pour l'avertissement d'une sortie de voie de circulation

Publications (1)

Publication Number Publication Date
EP1979208A1 true EP1979208A1 (fr) 2008-10-15

Family

ID=38179621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06847756A Withdrawn EP1979208A1 (fr) 2006-01-31 2006-12-18 Système et procédé pour l'avertissement d'une sortie de voie de circulation

Country Status (9)

Country Link
US (1) US20070179697A1 (fr)
EP (1) EP1979208A1 (fr)
JP (1) JP2009525228A (fr)
CN (1) CN101336180A (fr)
AU (1) AU2006337060A1 (fr)
BR (1) BRPI0621410A2 (fr)
CA (1) CA2640888A1 (fr)
RU (1) RU2423258C2 (fr)
WO (1) WO2007089342A1 (fr)

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Also Published As

Publication number Publication date
CN101336180A (zh) 2008-12-31
US20070179697A1 (en) 2007-08-02
CA2640888A1 (fr) 2007-08-09
WO2007089342A1 (fr) 2007-08-09
RU2008135363A (ru) 2010-03-10
JP2009525228A (ja) 2009-07-09
BRPI0621410A2 (pt) 2011-12-06
RU2423258C2 (ru) 2011-07-10
AU2006337060A1 (en) 2007-08-09

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